1. The propeller of a World War II fighter plane is 2.10 m in diameter. (a) What is its angular velocity in radians per second if it spins at 1100 rev/min? Enter to 3 significant figures W 115 (b) What is the linear speed of its tip at this angular velocity if the plane is stationary on the tarmac? Enter to 3 significant figures V= 121 ac= rad/s (c) What is the centripetal acceleration of the propeller tip under these conditions? Calculate it in meters per second squared. Enter to 3 significant figures 1.39 X 106 ac g m/s 1.42 x 10 Compare the centripetal acceleration to the acceleration due to gravity g. Is the centripetal acceleration very large or very small compared to g? Enter to 3 significant figures m/s²

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Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.